My old Panasonic microwave had chipped paint inside that was peeling, thou it worked fine, I didn't think it wise to continue to use it in this condition. The new one works just as well but with a longer route to get to your desired destination as far as setting it to do what you want, when you want it. It's quite and very powerful. We will see down the line if I feel the same after many months of use. As they say, I'll be back.